Embossing die holder



May 23, 1933.

'.J. K. BRowNvlNG EMBOSSING DIE HOLDER Filed Nov. 30. 1931 1.31.3 Tvwwwa w 6 .a 1I en Jlo 5 6 3- 6 i 6 22 3 f l 3 7 w m/ 2. M l 2o 2 W .a Mu/u m a 7 2 E9 9 4 2 .Aanv/...dl M2! l .o 5w 3,5, ...w 41. uw ,F Q Jl n. l 4 m f\ /1 6 l" 4l "Am 4 m n u w8 alo o 2 W 3 5MM 3| f .u smnnnnl... .1- 4

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Patented May 23, 1933 UNITED i STATES PATENT OFFICE JOHN K. BROWNING, or CINCINNATI, OHIO, As'sIGNoR 'ro THE HEHKIN CAN COMPANY,

OF CINCINNATI, OHIO, A CORPORATION OF OHIO EMBOSSING DIE HOLDER Application led November 30, 1931.l Serial No. 577,964.

This invention relates to means for metal embossing and has for its Obj ect the provision of a simple mechanism including removable and interchangeable die holders and means whereby the cooperating dies are readily adj usted one to the other for proper cooperation on sheet metals of various thicknesses.

Another object is to provide an embossing mechanism such as may be included in can making machinery wherein the degree between the male and female dies is effected by a very simple mechanism without the removal of the die holder and without disturbing the relation of the driving shafts in a machine.

These and other objects are attained by the means described herein and disclosed in the accompanying drawing, in which:

Fig. 1 is a side elevational view showing a pair of cooperating die holdersmounted on rotary carriers with a piece of work interposed.

Fig. 2 is a view taken on line 2 2 of Fig. 1.

Fig. 3 is a transverse section through the upper carrier of Figs. 1 and 2 and showing the simple mechanism for removably supporting the die holder and also for adjustment of the carrier relative to its shaft.

Fig. 4 is a view taken on line 4-4 of 3.

Fig. 5 is a view taken on line 5 5 of Fig. 4.

Fig. 6 is a transverse section of the lower carrier of Figs. 1 and 2.

rihe mechanism shown herein is particularly adapted to the embossing of marks and other indicia in sheet metal members entering into the make-up of metal cans, said marks and indicia being subject under such conditions to frequent changes according to work lots operated upon. It will be understood that the mechanism shown may `not of necessity be coupled with can making machinery although it is especially well adapted to such machines'. Y

Extending from a suitable portion of a can forming machine 10 are a pair of parallel shafts 11 and 12 synchro-nously driven in any suitable manner as by worm shaft 13. Shaft 11 may be provided with an adjustable die carrier 14 and shaft 12 may support the cooperating non-adjustable die carrier 15. A

set screw 1,50 may fix this meniber'to shaft 12. It is to be understood that the carriers may be reversed lwith relation to the shafts with equal efficiency. A non-adjustable carrier 15 comprises a suitable metal body 16 with arcuate ends 17 and 18. At the end 18 there is provided a dove-tailed transverse way 19 in which the removable die holder 20 having a complementary .dove-tailed taper may be seated. The holder 20 may carry the female dies 21.l These dies are in turnl removably and interchangeably mounted through the agency of plates 22. AA bore 23 extends from the side 24 of carrier body 16 to provide a shoulder 25. A smaller counter-bore 26 eX- tends through the remaining distance of the body 16. It should be noted thatV the dovetailed way 19 is deeper at one. end and this deeper portion intersects the bore 23 and'that the holder 20 hasfa lug 27 which moves into the bore 23 when the holderl is in operative position. A bearing sleeve 2S is mounted in the end of bore 23 and provides a reciprocating bearing for the end 29 of a stein which extends outwardly and has its opposite end 30 similarly mounted in the counter-bore 26. Anintegral tapered cone31 adjacent the end 29 of the stem has its smaller end adjacent the sleeve 28 and its larger end which is of substantially the same diameter as the sleeve serving as an abutment for spring 32. The spring 32 abuts shoulder 25 at the end of the bore 23. The bottom face 33 of the extension or lug 27 on diefholder 20 has lan inclined groove 34 complementary to the taper on the cone 31 so that by withdrawing the stein l30 against the resistance of the spring '32 the cone 31 is displacedlongitudinally in its bore and the carrier 20 may be freely moved into or outfof its dove-tailed seat 19.' When the V stem 30 is released the spring 32 urges the convenientlyholding the cone out of operative position when removing and inserting the die holder.

It will be noted that a practically identical mounting for the die holder is mounted in the upper carrier, the upper or adjustable carrier being provided with a two-part body, the outer part 160 having the bore 23 therein which carries the die holder retaining mechanism. The inner body member 161 is mounted on a suitable sleeve 37 which is keyed'to shaft 11. The complement-ary body members 16 and 161 have snug sliding bearings one on the other at the sides 38. Member 161 is notched out at 39 while' the member`160 'carries a complementary projection 4() so that the -abutting faces 'of these may slideone upon another. The projection v40 has a threaded bore 41 to receive the threaded sleeve 42 in`whic`h--a crank pin 43 is journalled. This-has fan angular tip 44 for-receiving a wrench or the like for 'rotating the 'crank pin. An offset cylindrical lug 45y on the end of the crank'pin seats in a bore 46 in the -member-'1612and the end of thesleeve 42 when screwedv tightly into the threaded bore 41 binds this cylindrical lug to the member 161 and precludes rotation-thereof. In Fig. 4 it willbe noted that the bore -46 is elongated horizontally so'that upon loosening of sleeve42 the lug 46k may eXert a lowering V-an'd lliftingl of member i161 relative to member 160, this-action being used for the purpose of adjusting the'male die 47 in the holder 20"'relative to shaft 11 and'likewise relative` to the female die 21. A disc 48 has vertical 'elongated -slotsV V49through which tightening-screws 50 pass and engage in the opposite sides of member 160 for holding the `membersw160 and161 against relative movement after adjustment has been made.` At the opposite face off these members vasecond 'disc' 51 with an enlarged clearance space`52 surrounds shaft 11andr is secured to themember 160 by screws 53. In this way it is unnecessary to remove or loosen screws 53'and, in order tol makea'djustments of the carrier 'it is necessary merely to loosen bolts 501and sleeve 42 and to then rotate crank pin 43 by a wrench or key toproduce upward or downwar'dshiftinglof the member 16() for obtain- .ingY the proper meshing of the'complementary dies, whereupon this particular Aseating is fixed b'yagain tightening sleeve 42 and screws 50.

In'practicef a plurality of the die holders 20, *which may be'identical if desired, are fitted up in sets or pairs, onehaving the male dies 47 and the other' having the female dies 21,- these dies being insertable-'after removing o-ne of the plates 22 on the die holder.

When yone set of dies is to be used, the oper- 'fato'r pulls outfstem V30 of one of the receivers anidlretains it-inthe withdrawn condition by turning the arm 35 so that it rests-against the pin36 as 'shownin'Fig l6 oragain'st the body of the receiver as shown in Fig. 3. The operator may then slide the die holder 20, into the dove-tailedgroove. The groove and the corresponding part on the die holder being irregular, it is impossible for the operatoritoimprope'rly insert the holderin the receiver. VVhenthe'holderis inserted the operator merely turns the arm 35 to allow the spring 32 topush the cone 31 into place whereuponcone andnotch 34 will automati- -cally adjust' themselves to a proper centering otthe-die-relative to the receiver. This same operation is repeated with the remaining i die kholder or i the remaining receiver, whereupon the operator is ready to regulate the imprint made by the dies onthe particular sheet material at-hand =Iffthe trial impress-ion'proves too shallow or too faint, screws 50 and sleeve 42 would be loosened and crank pin 43 rotated within the sleeve to push 'the member 160 downwardly I or radially outwardly. lVhen theproper'setting is attained, sleeve 43 is tightened, screws 50 'drawn up snugly, whereupon the machine is readyfor operation.

The work 54 is fed by means of va suitable pusher 55 along` guides 56 and-the carriers 14 and 15 rotating in the vdirection ofthe arrows in Fig. 1 bringing the complementary dies into operation on opposite sides ofsaid work.

As has been previously mentionedy either or both of the carriers maybe made adjustable.

lVhat is claimed is:

`l. vIn combination adie carrier havingv a bore therein and a transverse dove-tailed slot` communicating in part with said bore of a spring urged conical member reciprocable in said bore and normally urged to seat over the communicating portiion of the .groove and bore, a dovetailed die holder seating in the slot, and an offset portion on said holderhaving a 'tapered notch for seating said conical member.

'2. In combination a die carrier having a bore therein and a transverse dove-tailed slot communicating in part with said bore ofv a spring urged conical member reciprocable in said bore and normally'urged to seat over the communicating portion of the groove and bore, means Comprising 'an arm forlholding the conical member away from .said communicating portion against'theresistance of the spring, anda holder adapted for interchangeably receiving dies, said holder being removably' mounted in the transverse dovetailed slot, and Vanoffset portion in said holder havinga tapered'notch therein for seating the spring-urged vconical member.

3. lIn combination `a receiver member having la boretherein and a dove-tailed:groove `extending transversely thereofv and having communication at its ones1de-w1th the bore,

a dove-tailed die holder reciprocable in the dove-tailed groove, a lug on the die holder projecting into said communicating space in the bore and having a tapered notch therein and a spring urged conical member in the bore for seating in the notch in the die holder. Y

4. In an embossing mechanism the combination of a receiver comprising a centrally apertured outer member and an inner member longitudinally reciprocable therein, the inner member being` cut away at one side and end, the outer member having a projection enter ing in said notch, said outer member having a threaded bore extending from the exterior thereof and entirely through said notch, a i

threaded tubular sleeve in said threaded bore, the inner member having a laterally elongated seat opposite the bore in the sleeve with a crank pin comprising a portion rotatably mounted in the sleeve and an oifset lug seating in the elongated slot and adapted, upon rotation of the crank pin to shift the outer member relative to the inner member and means for clamping said outer and inner members against relative movement.

5. In an adjustable die receiver the combination with an outer receiver member, an inner receiver member, means whereby said inner receiver member may be mounted upon a shaft for rotation therewith, the inner member and outer member being adapted for relative longitudinal adjustment, the inner member having a horizontally elongated slot in one Jface, and means comprising a tubular externally threaded sleeve threadedly mounted in the outer member and having the end thereof movable toward and away from the inner member and a crank pin comprising a portion journalled in the sleeve and having an offset portion seated in said elongated notch and adapted to be bound therein by the end of the sleeve, and means comprising a pair of discs for clamping said outer and inner members in their adjusted positions.

6. In combination a die carrier having a bore therein and a transverse dove-tailed slot communicating with said bore, a die holder slidable in the dove-tailed shot and having a tapered notch and a tapered member movable in the bore and adapted to seat in the notch in the die holder.

In testimony whereof, I have hereunto subscribed my name this 23 day of Nov., 1931.

JOHN K. BROWNING. 

